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Cheap flights from Ontario to Seoul from $547

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Seoul departing on 5/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Ontario to Seoul

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:10 am - 10:25 pm
ONT
-
GMP
30h 15m
2 stops
Multiple Airlines Logo
8:10 am - 6:00 pm
GMP
-
ONT
25h 50m
2 stops
$1,434Multiple Airlines
Sun, Apr 5 - Mon, Apr 27
Multiple Airlines Logo
11:59 pm - 9:15 pm
ONT
-
GMP
29h 16m
2 stops
Multiple Airlines Logo
8:00 am - 6:37 pm
GMP
-
ONT
26h 37m
2 stops
$1,668Multiple Airlines
Mon, Apr 13 - Sat, Apr 18
Multiple Airlines Logo
11:59 pm - 9:15 pm
ONT
-
GMP
29h 16m
2 stops
Multiple Airlines Logo
7:15 pm - 1:18 pm
GMP
-
ONT
34h 03m
2 stops
$1,817Multiple Airlines
Tue, Apr 14 - Tue, Apr 21
Multiple Airlines Logo
12:10 am - 10:25 pm
ONT
-
GMP
30h 15m
2 stops
Multiple Airlines Logo
8:10 am - 6:00 pm
GMP
-
ONT
25h 50m
2 stops
$1,832Multiple Airlines
Sun, May 24 - Thu, Jun 4
Multiple Airlines Logo
11:59 pm - 10:40 am
ONT
-
GMP
42h 41m
2 stops
Multiple Airlines Logo
7:15 pm - 1:18 pm
GMP
-
ONT
34h 03m
2 stops
$1,889Multiple Airlines
Sat, Apr 18 - Tue, Apr 28
Multiple Airlines Logo
11:59 pm - 9:15 pm
ONT
-
GMP
29h 16m
2 stops
Multiple Airlines Logo
8:00 am - 7:56 pm
GMP
-
ONT
27h 56m
2 stops
$1,983Multiple Airlines
Thu, May 21 - Mon, Jun 1
Multiple Airlines Logo
11:59 pm - 9:15 pm
ONT
-
GMP
29h 16m
2 stops
Multiple Airlines Logo
12:05 pm - 10:36 pm
GMP
-
ONT
26h 31m
2 stops
$2,325Multiple Airlines
Thu, Apr 16 - Thu, Apr 23
Multiple Airlines Logo
11:59 pm - 9:15 pm
ONT
-
GMP
29h 16m
2 stops
Multiple Airlines Logo
8:00 am - 7:56 pm
GMP
-
ONT
27h 56m
2 stops
$2,532Multiple Airlines
Sun, Jun 7 - Thu, Jun 18
Multiple Airlines Logo
7:08 pm - 6:00 pm
ONT
-
GMP
30h 52m
2 stops
Multiple Airlines Logo
1:50 pm - 9:39 am
GMP
-
ONT
35h 49m
2 stops
$2,563Multiple Airlines
Sun, Mar 22 - Fri, Mar 27
Multiple Airlines Logo
6:00 am - 10:40 am
ONT
-
GMP
36h 40m
2 stops
Multiple Airlines Logo
7:15 pm - 11:53 am
GMP
-
ONT
32h 38m
2 stops
$2,990Multiple Airlines
Fri, Jul 31 - Sat, Aug 8

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Seoul Gimpo Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 3, 2026.
Use the filters below to find and compare flights from Ontario to Seoul Gimpo Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Sun 4/5

12:10 am-10:25 pm

2 stops30h 15m

Seoul Gimpo Intl

Mon 4/27

8:10 am-6:00 pm

2 stops25h 50m

$1,434

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Mon 4/13

11:59 pm-9:15 pm

2 stops29h 16m

Seoul Gimpo Intl

Sat 4/18

8:00 am-6:37 pm

2 stops26h 37m

$1,668

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Tue 4/14

11:59 pm-9:15 pm

2 stops29h 16m

Seoul Gimpo Intl

Tue 4/21

7:15 pm-1:18 pm

2 stops34h 03m

$1,817

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Sun 5/24

12:10 am-10:25 pm

2 stops30h 15m

Seoul Gimpo Intl

Thu 6/4

8:10 am-6:00 pm

2 stops25h 50m

$1,832

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Sat 4/18

11:59 pm-10:40 am

2 stops42h 41m

Seoul Gimpo Intl

Tue 4/28

7:15 pm-1:18 pm

2 stops34h 03m

$1,889

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Thu 5/21

11:59 pm-9:15 pm

2 stops29h 16m

Seoul Gimpo Intl

Mon 6/1

8:00 am-7:56 pm

2 stops27h 56m

$1,983

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Thu 4/16

11:59 pm-9:15 pm

2 stops29h 16m

Seoul Gimpo Intl

Thu 4/23

12:05 pm-10:36 pm

2 stops26h 31m

$2,325

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Sun 6/7

11:59 pm-9:15 pm

2 stops29h 16m

Seoul Gimpo Intl

Thu 6/18

8:00 am-7:56 pm

2 stops27h 56m

$2,532

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Sun 3/22

7:08 pm-6:00 pm

2 stops30h 52m

Seoul Gimpo Intl

Fri 3/27

1:50 pm-9:39 am

2 stops35h 49m

$2,563

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Fri 7/31

6:00 am-10:40 am

2 stops36h 40m

Seoul Gimpo Intl

Sat 8/8

7:15 pm-11:53 am

2 stops32h 38m

$2,990

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

When to book flights from Ontario to Seoul Gimpo Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Seoul Gimpo Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Seoul Gimpo Intl Airport (ONT to GMP) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Seoul Gimpo Intl Airport

Fastest flight time

23h 15m

Direct flights

None
The fastest flight from Ontario to Seoul Gimpo Intl Airport takes 23h 15m
There are no direct flights from Ontario to Seoul Gimpo Intl Airport. There are no popular flight routes from Ontario to Seoul Gimpo Intl Airport.
Search flight deals

  • How far is Ontario to Seoul Gimpo Intl by plane?

    A flight from Ontario to Seoul Gimpo Intl will travel around 5983.3 mi. By plane, this route typically takes 23h 15m.

  • When did momondo last update prices for flights from Ontario Airport to Seoul Gimpo Intl Airport?

    Prices for flights from Ontario Airport to Seoul Gimpo Intl Airport were last updated today.

  • How old do you have to be to fly from Ontario Airport to Seoul Gimpo Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Seoul Gimpo Intl Airport.

  • What documentation or ID do you need to fly to Seoul Gimpo Intl Airport?

    The necessary travel and health documents for your Seoul Gimpo Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from Ontario to Seoul Gimpo Intl Airport?

    Price Alerts will notify you by email when the price for flights to Seoul Gimpo Intl Airport from Ontario decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Ontario to Seoul Gimpo Intl Airport with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Seoul?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Seoul. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to Seoul with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seoul from Ontario with this policy.

How can momondo help me find flights from Ontario to Seoul?

momondo helps you find the best flight between Ontario and Seoul by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Ontario to Seoul right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Seoul, momondo offers a useful price alert feature which will track prices for flights to Seoul from Ontario and alert you when they change.

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